update readme

README.md

@@ -10,7 +10,7 @@ BandChain.js is a library for interacting with BandChain in browser and Node.js
 
 ## 📦 Installation
 
-BandChain.js is currently supported on NodeJS 16.x, and 18.x.
+BandChain.js is currently supported on Node.js 16.x, and 18.x.
 
 ### NPM
 
@@ -26,33 +26,4 @@ yarn add @bandprotocol/bandchain.js
 
 ## Compatibility
 
-Band 2.2.0, Cosmos SDK 0.44.0, IBC-go 1.1.0
-
-## Usage
-
-#### Retrieving Price Data
-
-```js
-const { Client } = require('@bandprotocol/bandchain.js')
-
-// BandChain's Proof-of-Authority REST endpoint
-const endpoint = 'https://laozi-testnet6.bandchain.org/grpc-web'
-const client = new Client(endpoint)
-
-// This example demonstrates how to query price data from
-// Band's standard dataset
-async function exampleGetReferenceData() {
-  const rate = await client.getReferenceData(
-    ['BTC/USD', 'BTC/ETH', 'EUR/USD', 'EUR/ETH'],
-    3,
-    4,
-  )
-  return rate
-}
-
-;(async () => {
-  console.log(await exampleGetReferenceData())
-})()
-```
-
-For more examples, please see [`example`](example/) folder.
+BandChain v3.0.0, Cosmos SDK v0.50.0, IBC-go v8.5.2